Ringer



Jan. 1, 1929. 1,697,057

W. H. EDWARDS RINGER Filed Deo. 24, 1925 u nimma,

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INVENTOR.

A TTORNE Y Patented Jan. 1, l1922.9.

UETED STATES 1,697,057 PATENT OFFICE.

WILLIAM H. EDWARDS, OF BROOKLYN, NEW YORK, ASSGNOR TO AMERICAN TELE- PHONE AND TELEGRAPH COMPANY, A COREORATION OF NEW YORK.

A RINGER.

Application led December 24, 1925. Serial No. 77,580.

rlhis invention relates to such lingers as are used in electrical work, and more particularly to those which are used at telephone sta tions.

In the use ot ringers in connection with telephone sets, considerable savings would result trom a reduction in the size ot' said sets. These savings would consist ot manufact-tiring savings due to the smaller housing which wouldbe provided tor theequipment, savings due to decreased expense of handling smaller apparatus in store-rooms and in transporta-tion, and savings in installation expenses due to the ease with which smialler sets could be handled and installed. A turther advantagek in the use of smaller sub scribers sets would be from an appearance standpoint, as it is usually desirable to make the sets as inconspicuous as possible.

Accordingly it is an object ot this invention to provide a ringer ot such compactness that it can be used in connection with telephone sets to render them smaller and less conspicuous than heretofore.

. Another object consists in providing a ringer of an eiiicient type in a simple and in` exl'iensive manner.

These and Jfurther objects will be apparent from the following description, when kconsidered in connection with the accompanying drawings, in which the invention illustrated.

ln the drawings, Figure l is a front elevation of the ringer; Fig. 2 is a side view there ot; Fig. 8 is a vertical section on the line 3 3 of Fig. 2; Fig. 4c is a modification oit the improved device; Fig. 5 is a front elevation ot a modiiied gong arrangement for the ringer-s; Fig. 6 is a top plan view ot Fig. 5; and Fig. 7 is a side elevation of Fi 5.

Referring to the drawings, in which structures generally similar to ordinary ringers are illustrated, the numerals 5 an d G represent electromagnets which are sup ported substantially parallel to each other and extend in the same direction from the yoke 7 to which e they may be secured b screws 8 inserted through said yoke into tie upper ends of the cores of said electromagnets. rlhe numeral 9 indicates a permanent magnet which is secured to the yoke by a threaded stud 10, which will be later referred to. The permanent magneteXtends substantially parallel to the electromagnets 5 and 6 and is bent around the lower end of the ringer and serves to keep the cores oi the electromagnets polarized.

At ll are indicated side posts which are secured to the yoke 7 and extend downwardly therefrom parallel to the electromagnets, and their threaded ends pass through pertorations provided at opposite ends ot a. bridge member l2. The bridge member l2 is adjust-ably secured to the threaded stems ot the members ll by upper and lower nuts 125 and le. constituting a pair.

A lironthearing l5 and a parallel rear bearing l5 are associated with the bridge member l2 in any suitable manner. For instance, the bearings may be integral therewith or atixed thereto, and an armature 16 ispivoted thereon by the bearings, shown in the present instance in the iorm of screws. The armature 16 extends across the cores of the electromagnets and may be biased by a. spring 18 attached to one ot its ends and extended to a post 19 affixed to one of the side members 1l. Thus it will be seen that the permanent magnet and electromagnets being constructed and related in accordance with the usual telephone ringer constructions, the armature is i'ree to respond to the attracting and repolling influence of the magnets, so that it will be tilted first. in one direction and then in the other.

A striker or Clapp-er rod 2O equipped with a striker or clapper 2l is suitably attached to the center of the armature 16 and is adapted to vibrate in accordance with the movement of said armature. The striker 21 may be slightly elongated and provided with flattened sides.

The stud 10, previously referred to, extends througl'i the yoke 7 and permanent mag- `net 9 and its threaded end is staked over driver inserted in a slot provided at the outer end of the post. The gong`22 is preferably drilled with an eccentric mounting opening, so that by rotating the gong about its axis when the post 24 is loosened, it may be adjusted with reference to the post and the striker 21 ot clapper rod 20, which is preterably oiifset as indicated. At the outer end ot' the post 24 another gong` Q5 is mounted. rthe gong 25 is identical with the gong 24, and is clamped to said post by a nut 26 havin an interposed lock Washer 26. The gong 25 may be adjusted in the same manner as indicated in. connection with the gong: 2li.

In the modilication illustrated in Fig. el. a bracket 27 which may be integral with the yoke 7, extends forwardly heretrom and then in the direction indicated. it the end ot the bracket an opening' is provided tor the reception ot the stud l which is mounted with its associated gongs 22 and in the same manner as described in connection with Figs. l, 2 and 3.

In Figs. 5, 6 and 7, which indicate a` modified arrangement to that shoivn in the previous ig'ures of the drawings, the construction of the ringer may be similar to that previously described with the following variation made in the manner oiI mounting' the gong on the ringer. ln the present instance a bracket 28 is formed from a. punching which may beintegi'ral with or attached to the yoke 7 .in any suitable manner. As shoivn, the bracket 28 is integral With the yoke i', and its forked members 29 ano 30 extend vertically therefrom. The post 24- and associated parts are ot the same construct-ion as oained in connection with Figs. l. 2, 9 and 4.-. ln this case the` stud l0 and post 24.- are mounted so that the axes ot the lie in a plane perpendicular to that ot the coils and G ot the ringer. rlhe space between the members Q9 and 30 permits the upper horizontal portion of the magnet 9 to entend therethrough and be secured to the yoke '.7 by a scren1 3l.

It. will be obvious that the when mounted as described lie in eccentric relation to the yoke member and to each other so that the clapper vibrates between the two gongs alternately, striking the inner edge of one and the outeredge ot the other.

t is pointed out that the advantage ot the above crescribed construction is the compactess ot the gong' arrangement. This compactness materially reduces the overall Width ot the ringer While increasing` its overall length but co'i'nparatively little, thereby decreasingg` by approximately 15%, tor instance, in the case ot the terms shovvn in Figs'. l and 2., the Volume ot the smallest square prism in which it could be included, ivhich is an indication oit the mounting;` space required tor the ringer. In addition to this', the improved arrangement permits the use oit screiv machine parts for the gone' mount-ings, instead of the formed parts now use(4 and provides a very simple method ot adjustii'ie the l'lvhile the arrangements ot this invention have been embodied in cert-ain speci lic iorms which have been deemed desirable, it will be understood that they are capable ot embodiment in many and Widely varied 'tornis Without departingv from the' spirit ot the invention as defined in the appended claims.

ixlhat is claimed is:

l. In a ringer, a yoke therefor, a pair ot ronge ot likev diameter mounted thereonv in eccentric and opposed relation to each other, and a clapper adapted to vibrate between the inne and outer edges ot said ronge in a direction perpendicular tothe axis thereof.

In a ringer, a yoke therefor. a pairvot ot like diameter eccentrically moimted thereon in eccentric and opposed relation to each other, and a clapper adapted to strike said .e'ongs alternately in al direction perpendicular to the anis thereof.

ntestimony whereof', l have signed my name to this specilica-tion this 23rd day ot December, 1925.

VHAM H. ElTWi/XRDS. 

